Attachment for road scrapers



Aug. 27, 1935. J. T. BOLEN ET AL ATTACHMENT FOR ROAD SCRAPERS Filed Maron 28, 1955 PatentedAug.` 27, 193s 11N-Vreev STATES PATENT @BELGE A'r'rsonmznar Fon-Riom sonnerie' "1'sse"r.'1s'qlen,oge J. Earnest; aridi rames Ei i c New;manKummerraustoreg.v Applicatienlk March. es, use, scriverne-13,531; 7 Y I c s claims.' (clsr-rfier This invention relates to road' scrapi'ngfdevices and has for animportant-object thereof an attachment for a conventional road* scraper of such a constructionthat the conventional scraper 1?()Y of travel so as to smooth the surfacel of tl'ieuoady andV force some' of the loose materia-laat either one side or tothe center-ofd the roadras maybe desired'. 'f

An' object of this' invention isu to provide an` 145 attachment'for a conventionaliroad:scraper which is of such a construction that the opposite ends of the scraper may be cl'osedwhen it is desired to use the scraper at right' angles toL the line of travel, the attachment being vof suclr a construction that when the scraper isl swung tofr an oblique angle to the line vof travel, one of vthe ends of. the scraper Will be automatically opened so as to permit the loose material tofflow offof said' one end. s' s Another object of this inventiorfy is toprojvid'e a scraper attachment' which' is lsd construct'- ed. that when the scraper. isdisp'o'sediat ari oblique angle to the linero'travel; the scraper willj'be held' from si'de slipping; Y, l,

A still"`furtherA cbjectoif' this inventiorris yto provide an 'attachmentv of this" character; of 'such a construction that O'ne'end Vof the scraper will 'be' automatically` opened' to" permit the loose maf terial' to. pass away 'from'. said; onev end andi the ends of the scraperwill be4 automaticallyj closed when the scraper is swung t'o a positon'at anglesv to. ,the line. of travelr thereby providing rneans whereby loose, material mayy .beA dragged forwardly for thedesired. distance Without hav- 40 ing any-of the loose material-flow oft ofthe, ends of thev scraper., Y 5 i Thee above and` various other objects,y andati:-

. vantages of. this inventionwill im partgbep de- 5 scribed and kin part be understcodtfroxm the folie- 4 lowing detailed` description ofthe `present pnefered; embodimenty thesaxne. being:

the laccompanyingv drawing VWhereirNL--Li ,i Figure l is atop pla-.n.viewrof a scraperzhaving arr4 attachmentrconstructed according` toenf'em b'odimentot this inventionx` mounted@ thereon;A i FiguregZ' is a detail; end elevationofi the scraper shownA in Figure 1;' f

Figure 3-is a lfragrnentaryA rear'felevatiorr of the 'scrapenshowing the' means* for* maintainingthe bladessozz'endi` members; im either a: lockedor'released yReferring iwitneldrawing wherein.; like Char;-A

ac'ters otiireference designate corresponding parts lthroughouilthe views, the letter S designates .x5`

generallyvai scraper of conventional. construction which provided: with a scraping blad'etB which may be vmovable .fromA aposition; at` right angles 'to thadrawbar Dtasshownirr dotted linesv or Vto a `vposition oblique: to the: linero travel,l aswshown `1g) im'full linesin Figurer. ,Y

Scrapers, 'off thistype,` whenrltheblade B f is1being pulled: over the surfacezof theroadj, there is a tendencyiforthe' blade `B toi creep: to. one

, si'ddue to. the'anguliarrpositiorr of the blade and additionthereto, when` the blade .Bis swung toas right angular position relative toi the drawvbar D, theloose material. may treelly flow off of the-endsoff thebI-ade. i f., f i

Inaorder to provide a means'wherebyfwhen the 29 blader-B is swung atfafri'ghtangulan posi-tion to Ythe length-ot tlledrawbar B', the-material ymoved forwardly byA t'heblade B will be. preventedl from sliding otros 'melones'. or mermado Wev have providedia; pair# of swingable endl blade members, 25 generalledesifginatedas mi 'Ifhese blademernbers |10 are o! similar construction andthe description of one of these memberswill applyequally wellfo' the description oftheott-1er"ifnemberf,-7

The blad-ememberA Wcomprises a plate |I' Vs`e- 3a cured? at its uppemendl: toa shaftl |21 as rivets Vnut t8. Peferablytl-ieorvvard endo theshaft .30 M t2 is` threadedifas at |19; anda nut 21|'L engages the threads offither reduced end; Thefrear end of" the7 shaft' lf2j li'sjfj'curnaled1 in a,bearingy 2f`| carriedt by-a pla-te: having a l'io'rinzorital'y 23. AIrrthe present instance; the-bearingjl is 45 horizontal arm 23 and this eyey 2,1 is s swingablie relative to the armi23. Preferablyfthe shaft |2 has'arr enlargementfcr annula'rjflange' 2A; at' oneY sfideY ofthejbearing orf'eye'nremb'erlgland a second 50 enlargement isdi'sposedfon theopposite or rear side oflthegbealringT(- so thatthe shaft.` Z will be held against`slongitudinal movementY relative to thel eye 2|"While having rotary'movenienttherein.

The share narso'has a substanairy"Lisnape'd 55 l vextension or blade controlling arm 26 at the rear the slot 3l thereof disposed on an angle to the` horizontal and preferably the"- slot 3| is also'l disposed on a slight curvatureso that when the blade B is swung to an oblique angle'relativetothe line of travel, the forward end blade I 'will be disposed on a slight inclination tothe vertical with the inclination extending downwardlyand inwardly toward the blade B.

- The drawbar rII 'islsecured asby'a pivot 32 to the drawbar D at a point forwardly ofthe pivotal connection between thev blade .B1 and thendrawbar D so that asthe blade B is adjusted in its4 relation to the drawbar D, the wing members-jor end blades I0 willbe automaticallymoved-:andWill at .all timesxbe ydisposed with the shafts I2 in parallel. relation to` eachk other. *f

By mountingxthe .Wing `or end members Illas hereinbeforedescribed these wing members may have either a horizontalswinging movement ora vertical swinging'movement and the scraper blade B may be freely adjusted Yto the desired angular relationy relative'to the draWbaryD.

In the use and operation of 4this device, the plate v3l! may be `.securedto an Vend of the scraper blade B, there beingtwo4 plates 30 one adjacent each n end. The drawbar I6 is pivotally mounted on the drawbar D and the ends of the drawbar `I 6 secured to theforward ends of the shafts I2. If it is desired to 'position the scraper blade B at right .angles to-.the drawbar D; the ,blade B- maybe adjusted by swinging this blade yrelative tothedrztvvbar D and locking the blade Ainits right angular position by pins or bolts extendingthrough .reg-

istering openings carried by. the rearend ofthe drawbar D and the platform or plateP carried by the'bladeB.`

As hereinbefore stated, the .scraper hereingdisclosed is only one of a number4 of types of scrapers with which the wing' members maybe engaged, vand we do not, `therefore,:desire togbe limited to any particular type 4of. scraper` as the scraper is `here disclosed. as aA conventional scraper. A, 'j L When theblade B is in its right angular .position, the wing, members .I0 will be disclosed at substantially 4,right angles to ther lengthbfthe blade B andwill close the opposite, ends ofthe blade B sothat a considerablequantity of material will be `moved forwardly which is yloosened by the, blade B. vIt will be apparent, therefore, lthat-when the blade B is initsjrightangularposition, the surface of the road mayv be scraped without leaving any ridges at thefop'posite' ends of the scrapedpo'rtion as `isthe ,case wherea scraper is used which does .not have wing members on the ends thereof.`

Where it 11s Ydesired, to shifttn materviiin lne v road, that is, fromv either the centertowvardthe side` or4 from therv sidev toward the' center the blade B may be swung at anrobliqueangle to'the une of travel, and `when thisis done, the "forward Wing member I0 will have the controlling mem ber 26 disposed in the'slotS I vof the bifurated arm i engagedwith the guide member 21, any loose material slidingv along the blade B will freely slide Yolf ,of'thej rear end of the blade B, and in its movementwill swing the rearmost wing member vIlloutwardly. lDue to the configuration of the guidemember 21, the foremost wing member I0 [will-be disposed on la slight inward inclination relativeto the blade B While at the .same time this foremost blade I0 will be disposed with the lower vedge-thereof parallel with the line of travel, and as the lower edge of each Wing member I is relatively sharp, the rigid Wing member, and in the Lpresent instance, the forward wing member, will actto prevent side slipping of the blade B as it is being pulled along the road.

It will'y be apparent from the foregoing that vthe wing members hereinbefore described may be vreadily mounted on any conventional scraper and Y when so mounted,'the conventional scraper will be` of such a construtionthat no ridges will be formed atlthe leading edge of the blade when the blade is oblique to the line of travel and in addition thereto, no ridges will .beformed at the opposite ends of the blade when the blade is at yright angles tothe line of travel.

l 'What is claimed i's:-A j

1. In combination, a road scraper includinga drawbar and a scraper'blade secured to the drawbar and adjustable relative thereto, a pair of wing members disposed one adjacent each end of ithe blade invpar'allel relation to the drawbar and to leach. other, 'and mounting means for said wing members, said mounting means including .meansto release one of the wing members when thescraper blade is disposed at an angleoblique tothe line of travel.'

y 2.4 4In combination witha road scraperlhaving a drawbar'and a scraper blade secured to Ythe drawbar and adjustable relative thereto, a pair .ofrwing .members disposed one adjacent each vend `o'f the blade'in parallel'relation to thedrawbar and to each other, mounting means for said .wing members,fand means for automatically releasing one-of said wing members when the blade isswungto'a positionoblique to the line of travel lof the scraper.

1 3. A means for retainingJ the dirt loosened by va scraper blade, comprising a pair of wing members adapted to be mounted one adjacent each l'end of the bladeof the scraper, and means for mounting said Wing members in parallel relation'toeach'other and in forwardly extended position relative to the `scraper blade, said mount-A ing means includingflmeans to release one f `of the wingfmembers when the scraper blade Yis .disposed at an angle oblique to the line of travel.

4. A means for preventing the dirt loosened by 'the blade of-a scraperV from passing off of the `ends ofthe blade of thescraper, ycomprising a pair of wing/members disposed in forwardly projecting 'positionrvone adjacent each endv of the scraper blade, and means for swingablymount- `ing said wing members forwardly of the scraper blade, said mounting'means including means to release one of said wing members for free swinging movement when the scraper blade is disposed at an oblique angle to the line of travel of the scraper.

5. In a road scraper having a`drawbar and a 4scraper blade secured to the drawbar and adof the shafts whereby said wing members may i have vertical swinging movement.

6. In a road scraper including a'drawbar and a scraper blade secured to the drawbar and adjustable relative thereto, a pair of wing members disposed one adjacent each end of the blade and projecting forwardly thereof, a pair of shafts secured one to each wing member, a horizontally swingable drawbar secured to said iirst drawbar, means engaging the ends of the second drawbar and the forward ends of the shafts to secure said shafts to the ends of the second drawbar while permitting rotation of the-shafts, means engaging the opposite ends of the shafts and the ends of the scraper blade to secure the opposite ends of the shafts to the scraper blade for rotation relative thereto, said means including a horizontally swingable bearing whereby said scraper blade may be adjusted to a `selected angular position relative tosaid first drawbar.

'7. In a road scraper including a drawbar and a scraper blade secured to the drawbar and adjustable relative thereto and a pair of vertically disposed wing members positioned one adjacent each end of the scraper blade, a pair of shafts secured one to each wing member, a transversely disposed drawbar, means for pivotally securing said second drawbar to said rst drawbar, an eye rotatably carried by each end of said second drawbar, each of said shafts being rotatably disposed in an eye, a second pair of eyes engaging the opposite ends of the shafts, means for mounting the second pair of eyes on the blade for hori- Zontal' swingingv movement relative thereto, and coacting means carried by each shaft and said latter mounting means for holding said wing members in vertical position, said mounting means including means whereby one ofv said wing members may be released for free swinging movement when the scraper blade is disposed at an oblique angle to the line of travel. 8. An attachment for a road scraper including a drawbar and a scraper blade adjustable relative tothe drawbar, comprising a pair of wing members adapted to be positionedone adjacent each end of the scraper blade, each wing member comprising a blade,'a shaft secured to the upper edge of the blade, a transversely disposed drawbar, coacting means carried by the wing members and the second drawbar'forpermitting vertical and horizontal swinging movement of r the wing members, swivelled means engaging the rear ends of the wing members, mounting means for said swivelled means for attaching saidswivelled means tor the scraper blade, a bifurcated member carried by said mounting means and an arm carried by each wing member and engaging said bifurcated member to lock the Wing members against vertical swinging movement when the scraper blade is at right Yangles to the first'` drawbar, said mounting means being so disposed as to release one ofsaidvwingvmembers for free vertical swinging movement whenV the scraper blade is disposedfat an oblique angle to the line of travel. l

JESSE T. BOLEN. GEORGE J. EARNEVST. JAMES E. NEWNHAM. 

